<template>
  <a-layout>
    <a-layout-content
      :style="{ background: '#fff', padding: '24px', margin: 0, minHeight: '280px' }"
    >
      <p>
        <a-form layout="inline" :model="param">
        <a-form-item>
          <a-input v-model:value="param.name" placeholder="名称">
          </a-input>
        </a-form-item>
        <a-form-item>
          <a-button type="primary" @click="handleQuery({page:1 , size:pagination.pageSize})">
            查询
          </a-button>
        </a-form-item>
          <a-form-item>
            <a-button type="primary" @click="add()">
              新增
            </a-button>
          </a-form-item>
        </a-form>


      </p>

      <a-table
        :columns="columns"
        :row-key="record => record.id"
        :data-source="ebooks"
        :pagination="pagination"
        :loading="loading"
        @change="handleTableChange"
      >

        <template #cover="{ text: cover }">
          <img v-if="cover" :src="cover" alt="avatar" />
        </template>

        <template v-slot:category="{text,record}">
          <span>{{ getCategoryName(record.category1Id) }} / {{getCategoryName(record.category2Id)}}</span>
        </template>

        <template v-slot:action="{ text, record }">
          <a-space size="small">

            <router-link :to=" '/admin/doc?ebookId=' + record.id ">
              <a-button type="primary" >
                文档管理
              </a-button>
            </router-link>

              <a-button type="primary" @click="edit(record)">
                编辑
              </a-button>
            <a-popconfirm
                title="删除后不可恢复。确认删除?"
                ok-text="是"
                cancel-text="否"
                @confirm="handleDelete(record.id)"
            >
              <a-button type="danger" >
                删除
              </a-button>
            </a-popconfirm>

          </a-space>
        </template>

      </a-table>

    </a-layout-content>
  </a-layout>

  <a-modal
      title="电子书表单"
      v-model:visible="modalVisible"
      :confirm-loading="modalLoading"
      @ok="handleModalOk"
  >
    <a-form :model="ebook" :label-col="{span : 6}" :wrapper-col="{span : 18}">
      <a-form-item label="封面">
        <a-input v-model:value="ebook.cover" />
      </a-form-item>
      <a-form-item label="名称">
        <a-input v-model:value="ebook.name" />
      </a-form-item>
      <a-form-item label="分类">
        <a-cascader
             v-model:value="categoryIds"
             :field-names="{ label: 'name', value: 'id', children:'children'}"
             :options="level1"
             />
      </a-form-item>

      <a-form-item label="描述">
        <a-input v-model:value="ebook.description" type="textarea" />
      </a-form-item>

    </a-form>

  </a-modal>

</template>

<script lang="ts">
  import { defineComponent, onMounted, ref } from 'vue';
  import axios from 'axios';
  import {message} from "ant-design-vue";
  import {Tool} from "../../../util/tool";
  import {useRoute} from "vue-router";


  export default defineComponent({
    name: 'AdminEbook',
    setup: function () {
      const param = ref();
      param.value = {};
      const ebooks = ref();
      const pagination = ref({
        current: 1,
        pageSize: 10,
        total: 0
      });
      const loading = ref(false);

      const columns = [
        {
          title: '封面',
          dataIndex: 'cover',
          slots: {customRender: 'cover'}
        },
        {
          title: '名称',
          dataIndex: 'name'
        },
        {
          title: '分类',
          slots: {customRender: 'category'}
        },

        {
          title: '文档数',
          dataIndex: 'docCount'
        },
        {
          title: '阅读数',
          dataIndex: 'viewCount'
        },
        {
          title: '点赞数',
          dataIndex: 'voteCount'
        },
        {
          title: 'Action',
          key: 'action',
          slots: {customRender: 'action'}
        }
      ];

      /**
       * 数据查询
       **/
      const handleQuery = (params: any) => {
        loading.value = true;

        //如果不清空，重新打开编辑时显示的还是原来的数据
        ebooks.value=[];
        axios.get("/ebook/list", {
          params:{
            page:params.page,
            size:params.size,
            name:param.value.name
          }

        }).then((response) => {
          loading.value = false;
          const data = response.data;
          if (data.success){
            ebooks.value = data.content.list;

            //重置分页按钮
            pagination.value.current = params.page;
            pagination.value.total = data.content.total;
          }else{
            message.error(data.message)
          }

        })



      };

      /**
       * 表格点击页码时触发
       */
      const handleTableChange = (pagination: any) => {
        console.log("看看自带的分页参数都有啥：" + pagination);
        handleQuery({
          page: pagination.current,
          size: pagination.pageSize
        });
      };

      //-------表单--------------
      const categoryIds = ref();
      const ebook =ref();
      const modalVisible = ref(false);
      const modalLoading = ref(false);

      const handleModalOk = () => {
        modalLoading.value = false;
        ebook.value.category1Id = categoryIds.value[0];
        ebook.value.category2Id = categoryIds.value[1];


        axios.post("/ebook/save", ebook.value).then((response) => {
          modalLoading.value = false;
          const data = response.data;
          if(data.success){
            modalVisible.value = false;
            //重新加载页面
            handleQuery({
              page: pagination.value.current,
              size: pagination.value.pageSize,
            });
          }else {
            message.error(data.message);
          }


        })



      };

      /*
        编辑
       */
      const edit = (record :any) => {
        modalVisible.value = true;
        ebook.value = Tool.copy(record);
        categoryIds.value=[ebook.value.category1Id,ebook.value.category2Id]
      };

      /*
        新增
       */
      const add = (record:any) => {
        modalVisible.value = true;
        ebook.value = {};
      };

      /*
        删除
       */
      const handleDelete = (id: number) => {
        axios.delete("/ebook/delete/"+id).then((response) => {
          const data = response.data;
          if(data.success){
            //重新加载页面
            handleQuery({
              page:  pagination.value.current,
              size: pagination.value.pageSize,
            });
          }
        })
      };



      /**
       * 数据查询
       **/
      const level1 =ref(); //一级分类树，children属于二级分类树
      let categorys :any;

      const handleQueryCategory = () => {
        loading.value = true;

        axios.get("/category/all").then((response) => {
          loading.value = false;
          const data = response.data;

          if (data.success){
            categorys = data.content;
            console.log("原始数据：",categorys.value);

            level1.value=[];
            level1.value=Tool.array2Tree(categorys,0);
            console.log("树型结构：",level1.value);

            //加载玩分类后再加载电子书，如果分类树加载很慢，则电子书渲染会报错
            handleQuery({
              page: 1,
              size: pagination.value.pageSize,
            });
          }else{
            message.error(data.message)
          }
        })
      };

      const getCategoryName = (cid : number) => {
        let result = "";
        categorys.forEach((item: any) =>{
          if (item.id === cid){
            result = item.name;
          }

        });

        return result;
      };



      onMounted(() => {
        handleQueryCategory();
      });


      return {
        param,
        ebooks,
        pagination,
        columns,
        loading,
        handleTableChange,
        handleQuery,
        getCategoryName,

        edit,
        add,


        ebook,
        modalVisible,
        modalLoading,
        handleModalOk,
        level1,
        categoryIds,

        handleDelete,

      }
    }
  });
</script>

<style scoped>
  img {
    width: 50px;
    height: 50px;
  }
</style>
